ui.java

POS is a Java&#174 platform-based, mission-critical, ISO-8583 based financial transaction library/fr

            Component[] cc = ((Container) c).getComponents();
            for (int i=0; i<cc.length; i++) {
                dumpComponent (cc[i]);
            }
        }
    }

    private JFrame initFrame (Element ui) {
        Element caption = ui.getChild ("caption");
        mainFrame = caption == null ?  
            new JFrame () :
            new JFrame (caption.getText());

        JOptionPane.setRootFrame (mainFrame);

        mainFrame.getContentPane().setLayout(new BorderLayout());

        String close = ui.getAttributeValue ("close");

        if ("false".equals (close))
            mainFrame.setDefaultCloseOperation (JFrame.DO_NOTHING_ON_CLOSE);
        else if ("exit".equals (close))
            mainFrame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);

        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        mainFrame.setSize(getDimension (ui, screenSize));
        locateOnScreen (mainFrame);
        return mainFrame;
    }

    private void locateOnScreen(Frame frame) {
        Dimension paneSize   = frame.getSize();
        Dimension screenSize = frame.getToolkit().getScreenSize();
        frame.setLocation(
            (screenSize.width  - paneSize.width)  / 2,
            (screenSize.height - paneSize.height) / 2);
    }
    private JMenuBar buildMenuBar (Element ui) {
        JMenuBar mb = new JMenuBar ();
        Iterator iter = ui.getChildren ("menu").iterator();
        while (iter.hasNext()) 
            mb.add (menu ((Element) iter.next()));

        return mb;
    }
    private JMenu menu (Element m) {
        JMenu menu = new JMenu (m.getAttributeValue ("id"));
        setItemAttributes (menu, m);
        Iterator iter = m.getChildren ().iterator();
        while (iter.hasNext()) 
            addMenuItem (menu, (Element) iter.next());
        return menu;
    }
    private void addMenuItem (JMenu menu, Element m) {
        String tag = m.getName ();

        if ("menuitem".equals (tag)) {
            JMenuItem item = new JMenuItem (m.getAttributeValue ("id"));
            setItemAttributes (item, m);
            menu.add (item);
        } else if ("menuseparator".equals (tag)) {
            menu.addSeparator ();
        } else if ("button-group".equals (tag)) {
            addButtonGroup (menu, m);
        } else if ("check-box".equals (tag)) {
            JCheckBoxMenuItem item = new JCheckBoxMenuItem (
                m.getAttributeValue ("id")
            );
            setItemAttributes (item, m);
            item.setState (
                "true".equals (m.getAttributeValue ("state"))
            );
            menu.add (item);
        } else if ("menu".equals (tag)) {
            menu.add (menu (m));
        }
    }
    private void addButtonGroup (JMenu menu, Element m) {
        ButtonGroup group = new ButtonGroup();
        Iterator iter = m.getChildren ("radio-button").iterator();
        while (iter.hasNext()) {
            addRadioButton (menu, group, (Element) iter.next());
        }
    }
    private void addRadioButton (JMenu menu, ButtonGroup group, Element m) {
        JRadioButtonMenuItem item = new JRadioButtonMenuItem
            (m.getAttributeValue ("id"));
        setItemAttributes (item, m);
        item.setSelected (
            "true".equals (m.getAttributeValue ("selected"))
        );
        group.add (item);
        menu.add (item);
    }
    private Dimension getDimension (Element e, Dimension def) {
        String w = e.getAttributeValue ("width");
        String h = e.getAttributeValue ("height");

        return new Dimension (
           w != null ? Integer.parseInt (w) : def.width,
           h != null ? Integer.parseInt (h) : def.height
        );
    }
    private void setItemAttributes (AbstractButton b, Element e) 
    {
        String s = e.getAttributeValue ("accesskey");
        if (s != null && s.length() == 1)
            b.setMnemonic (s.charAt(0));

        String icon = e.getAttributeValue ("icon");
        if (icon != null) {
            try {
                b.setIcon (new ImageIcon (new URL (icon)));
            } catch (MalformedURLException ex) {
                ex.printStackTrace ();
            }
        }
        b.setActionCommand (e.getAttributeValue ("command"));
        String actionId = e.getAttributeValue ("action");
        if (actionId != null) {
            b.addActionListener ((ActionListener) get (actionId));
        }
    }
    protected void setLookAndFeel (Element ui) {
        String laf = ui.getAttributeValue ("look-and-feel");
        if (laf != null) {
            try {
                UIManager.setLookAndFeel (laf);
            } catch (Exception e) {
                warn (e);
            };
        }
    }
    private JComponent createComponent (Element e) {
        if (e == null)
            return new JPanel ();

        JComponent component;
        UIFactory factory = null;
        String clazz = e.getAttributeValue ("class");
        if (clazz == null) 
            clazz = (String) mapping.get (e.getName());
        if (clazz == null) {

            try {
                clazz = classMapping.getString (e.getName());
            } catch (MissingResourceException ex) {
                // no class attribute, no mapping
                // let MBeanServer do the yelling
            }
        }
        try {
            if (clazz == null) 
                factory = this;
            else 
                factory = (UIFactory) objFactory.newInstance (clazz.trim());

            component = factory.create (this, e);
            setSize (component, e);
            if (component instanceof AbstractButton) {
                AbstractButton b = (AbstractButton) component;
                b.setActionCommand (e.getAttributeValue ("command"));
                String actionId = e.getAttributeValue ("action");
                if (actionId != null) {
                    b.addActionListener ((ActionListener) get (actionId));
                }
            }
            put (component, e);

            Element script = e.getChild ("script");
            if (script != null) 
                component = doScript (component, script);

            if ("true".equals (e.getAttributeValue ("scrollable")))
                component = new JScrollPane (component);
        } catch (Exception ex) {
            ex.printStackTrace ();
            warn ("Error instantiating class " + clazz);
            warn (ex);
            component = new JLabel ("Error instantiating class " + clazz);
        }
        return component;
    }
    protected JComponent doScript (JComponent component, Element e) {
        return component;
    }
    private void setSize (JComponent c, Element e) {
        String w = e.getAttributeValue ("width");
        String h = e.getAttributeValue ("height");
        Dimension d = c.getPreferredSize ();
        double dw = d.getWidth ();
        double dh = d.getHeight ();
        if (w != null) 
            dw = Double.parseDouble (w);
        if (h != null) 
            dh = Double.parseDouble (h);
        if (w != null || h != null) {
            d.setSize (dw, dh);
            c.setPreferredSize (d);
        }
    }
    public JComponent create (Element e) {
        JComponent component = null;

        Iterator iter = e.getChildren().iterator();
        for (int i=0; iter.hasNext(); i++) {
            JComponent c = createComponent((Element) iter.next ());
            if (i == 0)
                component = c;
            else if (i == 1) {
                JPanel p = new JPanel ();
                p.add (component);
                p.add (c);
                component = p;
                put (component, e);
            } else {
                component.add (c);
            }
        }
        return component;
    }
    public JFrame getMainFrame() {
        return mainFrame;
    }
    
    private void createObjects (Element e, String name) {
        Iterator iter = e.getChildren (name).iterator ();
        while (iter.hasNext()) {
            try {
                Element ee = (Element) iter.next ();
                String clazz = ee.getAttributeValue ("class");
                Object obj = objFactory.newInstance (clazz.trim());
                if (obj instanceof UIAware) {
                    ((UIAware) obj).setUI (this, ee);
                }
                put (obj, ee);
            } catch (Exception ex) {
                warn (ex);
            }
        }
    }
    private void createMappings (Element e) {
        Iterator iter = e.getChildren ("mapping").iterator ();
        while (iter.hasNext()) {
            try {
                Element ee = (Element) iter.next ();
                String name  = ee.getAttributeValue ("name");
                String clazz = ee.getAttributeValue ("factory");
                mapping.put (name, clazz);
            } catch (Exception ex) {
                warn (ex);
            }
        }
    }
    protected void warn (Object obj) {
        if (log != null)
            log.warn (obj);
    }
    private void put (Object obj, Element e) {
        String id = e.getAttributeValue ("id");
        if (id != null) {
            registrar.put (id, obj);
        }
    }
}